TO better understand files on a dual boot system you need to read up on the new methodolgy for 7..
here is a great blog post on Windows 7 Libraries...
http://windowsteamblog.com/blogs/dev...libraries.aspx
Some really cool changes happend wth 7's document mangement but it may cause some issues with Dual boot systems XP moreso that Vista.
Hope the article helps!
Larry D
MS AE